What was used in experiments to induce mutations in Drosophila in the 1920s? What is Drosophila? Search online. X-rays was used in the experiment To induce mutations
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What was used in experiments to induce mutations in Drosophila in the 1920s? What is Drosophila? Search online. X-rays was used in the experiment To induce mutations
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- For the first experiment ever on Drosophila mutations. Answer the following questions. a. What is the title of the first published paper explained the experiment and what is the name of the Author? b. What is the first mutation discovered in Drosophila? c. Explain the changes in the Drosophila yellow mutant (Y)compared to wild type.What is the last name of the scientist who discovered that x-rays can increase the rate of mutation in fruit flies?Prior to the work described here, what was the original purpose ofMorgan’s experiments with Drosophila?
- Geneticists often use the alkylating agent ethylmethane sulfonate (EMS; see Figure 15.6) to induce mutations in Drosophila. Why is EMS a mutagen of choice for genetic research? What would be the effects of EMS in a strain of Drosophila lacking functional mismatch repair systems?What is inverse PCR? How are we going to use inverse PCR to help figure out the molecular location of the EP element on Drosophila melanogaster flies?Geneticists often use ethylmethane sulfonate (EMS) to induce mutations in Drosophila. Why is EMS a mutagen of choice for genetic research? What would be the effects of EMS in a strain of Drosophila lacking functional mismatch repair systems?
- Why is Drosophila used extensively for genetic studies?What is a simple way of making a knockout mouse in terms of DNA recombinant technology?Describe how you would use replica plating of mutagenized, haploid yeast cells to identify temperature-sensitive (ts) mutations in essential genes needed for yeast growth and survival.
- What is the most likely method by which a gene produces red eyes in fruit flies? the gene codes for an enzyme that changes a colorless chemical into a red chemical in the cells of the eye the gene codes for an enzyme that is red a mutation changes the coding sequence of the gene so that it codes for a red protein instead of a white protein the gene codes for a chemical that is red in colorMost organisms display a circadian rhythm, a cycling of biological processes that is roughly synchronized with day length. In Drosophila, pupae eclose (emerge as adults after metamorphosis) at dawn. a)Using this knowledge how would screen for Drosophila mutants that have an impaired circadian rhythm? b)In each case, how would you clone the genes you identified by mutation?The homeotic mutation Antennapedia causes mutant Drosophila to have legs in place of antennae and is a dominant gain-of-function mutation. List all the properties of such mutations. How does the Antennapedia gene change antennae into legs?